Fix bugs: event handlers, variable shadowing, performance

[GabHST]

Summary

Bug fixes for FillRaidBots addon on WoW 1.12.1:

• MODIFIER_STATE_CHANGED handlers broken — used function(_, _, key, state) parameter style which doesn't work in 1.12.1 (args come from globals arg1/arg2). Ctrl+Alt click-to-fill from boss target never worked. Fixed both keyboardFrame and detectBossEventFrame handlers.
• GROUP_ROSTER_UPDATE doesn't exist in 1.12.1 — replaced with PARTY_MEMBERS_CHANGED (RAID_ROSTER_UPDATE was already registered).
• Variable shadowing — botCount, initialBotRemoved, firstBotName, messageQueue declared twice with local, creating two independent sets. Code before line 249 used one set, code after used another. Removed local from second declarations.
• restoreFrame shadowing — two separate restoreFrame frames created. ToggleSoundEffectsVolume("restore") used the first, RefillBots used the second. Renamed second to refillRestoreFrame.
• print() doesn't exist in 1.12.1 — replaced all print() calls with DEFAULT_CHAT_FRAME:AddMessage() in both FillRaidBots.lua and debugger.lua.
• Performance: guild/friend list rebuilt inside loops — buildGuildRoster() and buildFriendList() were called inside for i = 1, GetNumRaidMembers() loop (up to 40x per check). Moved before the loop.
• Tooltip anchors wrong — Group Loot and Master Loot tooltip anchored to FFA checkbox instead of their own.
• Implicit globals — totalHealers and totaly lacked local, polluting global namespace.
• PresetPopup OnHide inverted — removeButton:Show() when no preset selected, should be Hide().
• Debugger timestamps missing — GetTimestamp() was defined but never called in DebugMessage().
• Removed duplicate generateTooltip/regenerateTooltips definitions in Presets.lua (first pair was dead code).
• Fixed "automaticaly" typo → "automatically"

Test plan

• Ctrl+Alt click on boss target with preset popup open — verify auto-fill works
• Fill a raid, verify bot count logic works correctly (no variable desync)
• After refill, verify sound volume restores properly
• Check debugger messages have timestamps
• Hover Group Loot / Master Loot checkboxes — tooltip should appear next to the correct checkbox
• Open /frbdebug — verify no Lua errors from print()